package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;

/**
 * 集中处理所有异常
 *
 * @author LaiSanShan
 * @date 2021-07-21
 */
@Slf4j
@RestControllerAdvice(basePackages = "com.atguigu.gulimall.product.app")
public class GulimallExceptionControllerAdvice {

    /**
     * 统一处理数据校验异常
     *
     * @param e 方法参数校验异常
     * @return 统一响应
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleValidException(MethodArgumentNotValidException e) {
        log.error("数据校验出现问题{}，异常类型：{}", e.getMessage(), e.getClass());
        BindingResult result = e.getBindingResult();

        Map<String, String> errorMap = new HashMap<>();
        result.getFieldErrors().forEach(item -> {
            errorMap.put(item.getField(), item.getDefaultMessage());
        });
        return R.error(BizCodeEnum.VALID_EXCEPTION.getCode(), BizCodeEnum.VALID_EXCEPTION.getMsg()).put("data", errorMap);
    }

    /**
     * 其他所有异常
     *
     * @param throwable 所有异常
     * @return 统一响应
     */
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable) {
        log.error("错误：", throwable);
        return R.error(BizCodeEnum.UNKNOW_EXCEPTION.getCode(), BizCodeEnum.UNKNOW_EXCEPTION.getMsg());
    }
}
